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| Format: | Artículo científico |
| Language: | es |
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Universidad de Valparaíso
2017
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| Online Access: | https://www.redalyc.org/articulo.oa?id=47954027012 |
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Table of Contents:
- Análisis de la comunidad de peces de descarte en la pesca de arrastre de camarón (temporada de lluvias 2013) en la zona centro-sur del litoral veracruzano, México Angel Morán-Silva Rafael Chávez-López Ma. de Lourdes Jiménez-Badillo Sergio Cházaro-Olvera Gabriela Galindo-Cortes Cesar Gabriel Meiners-Mandujano Ciencias de la Tierra fishes shrimp Discard Alvarado Veracruz The brown shrimp ( Penaeus aztecus ) fishery is the most important in the Gulf of Mexico. This fishery takes non-target species or by-catch fauna, mainly teleost fishes, which are incidentally captured. Some of the by-ca tch species has commercial use and the rest of them are discarded. Therefore, it is important to describe the composition of th e discarded fauna, to determine the impacts under the ecosystem approach. Discarding catch of shrimp trawls carried out in 2013 on t he continental shelf off the State of Veracruz in different depth intervals (22-46 and > 46 m) was analyzed. For each trawl, the shrimp catch, the commercial by-catch and the discarding were recorded and the catch ratios respect to shrimp, were obtained. A d iscard sample was taken and the species were identified, the total length was taken and the ecological parameters were calculate d. The non-parametric multiple dimensional scaling test was performed. A total of 7,178 fishes were collected from 34 fami lies, 46 genera and 51 species. The ratio of commercial species by-catch: shrimp and discard: shrimp was 15.41:1 and 40:1 k g, respectively. The species with high relative dominance were Citharichthys macrops , Synodus foetens , Diplectrum bivittatum, Rhomboplites aurorubens and Upeneus parvus . The species with greater importance index were C. macrops, S. foetens , and D. bivittatum . The 43.14% of the discarded species are used as food and 7.84% as bait. The maximum diversity (H ́) was 3.76 bits ind -1 and the trophic level was 4.31. The study of discard composition is a basis to assess the impact generated by the shrimp trawl ers and provides guidelines for identify changes in the community structure. 2017 artículo científico 0717-3326 https://www.redalyc.org/articulo.oa?id=47954027012 es http://www.redalyc.org/revista.oa?id=479 Revista de Biología Marina y Oceanografía application/pdf Universidad de Valparaíso Revista de Biología Marina y Oceanografía (Chile) Num.3 Vol.52